Nuclear spin relaxation by translational diffusion in solids: X. Monte Carlo calculation for the simple hopping model
Nuclear spin relaxation by translational diffusion in solids: X. Monte Carlo calculation for the simple hopping model
复制标题
固体中平移扩散的核自旋弛豫：X.简单跳跃模型的蒙特卡罗计算
DOI：
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发表时间：
1986
期刊：
影响因子：
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通讯作者：
C. A. Sholl
中科院分区：
文献类型：
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作者：
D. Faux;D. Ross;C. A. Sholl
本文用MonteCarlo方法计算了立方晶体中扩散自旋间磁偶极耦合引起的核自旋弛豫率的谱密度函数J（p）（ω）。该分析利用了各种极限下的已知精确结果。蒙特卡罗计算中的统计波动在高频率下变得更加显著，但在该区域中已知准确的分析结果。因此，在整个频率范围内的所有自旋浓度，除了单空位限制的数值结果。
The spectral density functions J(p)( omega ) relevant to nuclear spin relaxation rates due to magnetic dipole coupling between diffusing spins in cubic crystals are calculated, for the simple hopping model, by a Monte Carlo method. The analysis makes use of known exact results in various limits. The statistical fluctuations in the Monte Carlo calculations become more significant at high frequencies but accurate analytic results are known in this regime. Numerical results are therefore obtained over the entire frequency range for all spin concentrations except the monovacancy limit.